Make mysociety.config.set_file store an absolute path by default. References to config will then still work after a change of current working directory.
Make mysociety.config.set_file store an absolute path by default. References
to config will then still work after a change of current working directory.

MorusAB/commonlib-fmg,MorusAB/commonlib-fmg,MorusAB/commonlib-fmg,MorusAB/commonlib-fmg,MorusAB/commonlib-fmg,MorusAB/commonlib-fmg,MorusAB/commonlib-fmg,MorusAB/commonlib-fmg